Overview

The vestibular labyrinth consists of ? ve compartments: the lateral, anterior, and posterior semicircular canals, the utricule, and the saccule. At the beginning of the twentieth century, Robert Bárány proposed the caloric test as a clinical test of the lateral semicircular canal. This test enabled clinicians to assess the individual lateral semicircular canal function easily by using the simple method of irrigating the external ear canal with cold or warm water and observing the induced nyst- mus. We believe that the caloric test was a breakthrough in the ? eld of vestibular research. However, as far as the other compartments were concerned, there was no simple clinical test equal to the caloric test for the lateral semicircular canal function. At the end of the twentieth century, the vestibular evoked myogenic potential (VEMP) test was proposed as a new method for assessing the individual saccule function. This test has some unique attributes. First, it uses sound stimulation, even though it is a test of the vestibular system. This appears to be a contradiction n- rophysiologically. As a result, in its early stages there were controversies conce- ing the origin of the responses. However, such controversies have been overcome by basic neurophysiological studies and clinical studies. Above all, sound sensit- ity of the saccular afferents shown in cats and guinea pigs with single-unit recording methods became the main supporting evidence. Nowadays, VEMP is one of the routine clinical tests for balance disorder.

Full Product Details

Author:   Toshihisa Murofushi ,  Kimitaka Kaga
Publisher:   Springer Verlag, Japan
Imprint:   Springer Verlag, Japan
Edition:   Softcover reprint of hardcover 1st ed. 2009
Dimensions:   Width: 15.50cm , Height: 0.60cm , Length: 23.50cm
Weight:   0.195kg
ISBN:  

9784431998563

ISBN 10:   443199856
Pages:   112
Publication Date:   21 October 2010
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Paperback
Publisher's Status:   Active
Availability:   In Print  
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Table of Contents

Part I. Introduction.- Part II. Basics.- Overview of the Vestibular System Sound Sensitivity of the Vestibular End-Organs and Sound-Evoked Vestibulocollic Refl exes in Mammals.- Recording and Assessing VEMPs.- VEMP Variants.- Part III. Clinical Applications.- Menier's Disease and Related Disorders: Detection of Saccular Endolymphatic Hydrops.- Vestibular Neuritis (Neurolabyrinthitis) and Other Peripheral Vestibulopathies: Detection of Inferior Vestibular Nerve Damage.- Superior Canal Dehiscence Syndrome and VEMPs: Detection of Hypersensitivity of the Vestibular System to Sound.- Migraine-Associated Vertigo and VEMPs: Detection of Vestibular Signs in a Common but Unclear Entity.- Acoustic Neuroma and Other Cerebellopontine Angle Tumors: Detecting a Neoplasm in the Cerebellopontine Angle.- Disorders of the Central Nervous System and VEMPs: Detecting Lesions in the Vestibulospinal Pathway.- Part IV. Pediatric Applications.- Neurootological Application of VEMP Recording During Infancy and Childhood.

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